The radius of the disk is R, and the mass of the disk is M. Using the parallel axis theorem and theequation for the moment of inertia of a disk about its central axis developed in the previous example, Eq. (8), the moment of inertia of the disk about the specified axis is Fig.
Short Circuits. Short circuits are the second most common reason for breaker tripping and are a more serious concern. Short circuits occur when the black hot wires inside your electrical service panel come in contact with either other hot wires or neutral wires.
What causes a power surge? Power surges, (sometimes called voltage surges) are fast, temporary spikes in voltage within an electrical circuit. These surges, which are unavoidable, occur when something boosts the electrical charge at some point in the circuit. This boost can increase the current flowing into or within your homeâs electrical wiring, affecting lighting, appliances and other electrical equipment in your home or business.